Regarding SIP registration, the following description is incorrect?

Question

Rebecca Gillespie · Accepted Answer

The purpose of SIP registration is to bind the AOR address to a Contact address so that the Proxy can find the address of the caller when calling.

Rebecca Gillespie · Answer

Registration information must be refreshed periodically, and typically Register saves registration information to Location Server.

Rebecca Gillespie · Answer

Users need to register with the server each time they power on the system.

Rebecca Gillespie · Answer

Re-registration is required when the address of SIP C1ient changes.

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